LINUX下用户要访问 其它 用户下面的目录和命令

Question

[tuxedo@yxfktux ~]$ id oracle
uid=54321(oracle) gid=54321(oinstall) groups=54321(oinstall),54322(dba)
[tuxedo@yxfktux ~]$ id tuxedo
uid=54322(tuxedo) gid=54321(oinstall) groups=54321(oinstall),54322(dba)

[tuxedo@yxfktux ~]$  cd $ORACLE_HOME 
-bash: cd: /home/oracle/app/oracle/product/11.2.0/dbhome_1: Permission denied

tuxedo 用户要访问 tuxedo 用户下面的目录加命令都没权限,应该怎么改？求答案